PCR-DGGE analysis of the bacterial composition of a kaolin slurry showing altered rheology
2012
Papp, Ildikó | Balázs, Margit | Tombácz, Etelka | Babcsán, Norbert | Kesserű, Péter | Kiss, István | Szvetnik, Attila
Kaolin is an important industrial raw material and a basis of a range of different products. Microbial spoilage is a detrimental process observed especially in kaolin slurries, leading to low quality products and economic loss. Although the alteration of kaolin slurries in ceramic industry was observed, the process and the microbial background have not been analyzed in details. This study provides the first data using a cultivation independent molecular biological approach (PCR-DGGE) regarding the bacterial composition of an altered kaolin slurry. The results show that potential exopolymer (EPS) producer bacteria (e.g. Acinetobacter, Pseudomonas) appear in the altered kaolin slurry, which may have an important role in the modification of kaolin slurries.
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